Fix a bug in 'cache' where it will only cache the last system built, not all of them
Fix a bug in 'cache' where it will only cache the last system built, not all of them

reflex-frp/reflex-platform,reflex-frp/reflex-platform,paldepind/try-reflex,ocharles/try-reflex,meiersi/try-blaze-react,unisonweb/unison-dependencies,reflex-frp/reflex-platform,ajnsit/reflex-platform,ryantrinkle/try-reflex